stresser: (g=0): rw=write, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=1
fio: mixed read/write workload with verify. May not work as expected, unless you pre-populated the file
stresser: (g=1): rw=randrw, bs=16K-16K/16K-16K, ioengine=mmap, iodepth=4
Starting 2 processes
stresser: Laying out IO file(s) (1 file(s) / 4096MiB)

stresser: (groupid=0, jobs=1): err= 0: pid=9242
  read : io=4,096MiB, bw=230MiB/s, iops=14,736, runt= 17789msec
    clat (usec): min=11, max=103, avg=15.78, stdev= 1.73
    bw (KiB/s) : min=    0, max=249632, per=97.14%, avg=229040.89, stdev=39502.88
  write: io=4,096MiB, bw=19,163KiB/s, iops=1,197, runt=218871msec
    clat (usec): min=14, max=1,160K, avg=639.25, stdev=11242.58
    bw (KiB/s) : min=    0, max=83680, per=108.15%, avg=20725.42, stdev=22698.01
  cpu          : usr=30.27%, sys=3.27%, ctx=19540, majf=1, minf=2102311
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=262144/262144, short=0/0
     lat (usec): 20=51.59%, 50=44.85%, 100=0.30%, 250=1.37%, 500=0.34%
     lat (usec): 750=0.23%, 1000=0.31%
     lat (msec): 2=0.47%, 4=0.07%, 10=0.14%, 20=0.10%, 50=0.07%
     lat (msec): 100=0.08%, 250=0.06%, 500=0.02%, 750=0.01%, 1000=0.01%
     lat (msec): 2000=0.01%
stresser: (groupid=1, jobs=1): err= 0: pid=9329
  read : io=4,039MiB, bw=141MiB/s, iops=9,046, runt= 28574msec
    clat (usec): min=2, max=166, avg=14.35, stdev= 5.05
    bw (KiB/s) : min=    0, max=244736, per=100.34%, avg=145247.96, stdev=46341.28
  write: io=1,024MiB, bw=46,198KiB/s, iops=2,887, runt= 22697msec
    clat (usec): min=3, max=1,244K, avg=37.06, stdev=4860.05
    bw (KiB/s) : min=    0, max=53632, per=101.42%, avg=46858.19, stdev=11884.81
  cpu          : usr=7.77%, sys=1.17%, ctx=25508, majf=0, minf=1114500
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued r/w: total=258498/65536, short=0/0
     lat (usec): 4=0.01%, 10=11.85%, 20=76.07%, 50=12.04%, 100=0.02%
     lat (usec): 250=0.01%
     lat (msec): 2000=0.01%

Run status group 0 (all jobs):
   READ: io=4,096MiB, aggrb=230MiB/s, minb=230MiB/s, maxb=230MiB/s, mint=17789msec, maxt=17789msec
  WRITE: io=4,096MiB, aggrb=19,163KiB/s, minb=19,163KiB/s, maxb=19,163KiB/s, mint=218871msec, maxt=218871msec

Run status group 1 (all jobs):
   READ: io=4,039MiB, aggrb=141MiB/s, minb=141MiB/s, maxb=141MiB/s, mint=28574msec, maxt=28574msec
  WRITE: io=1,024MiB, aggrb=46,200KiB/s, minb=46,200KiB/s, maxb=46,200KiB/s, mint=22697msec, maxt=22697msec

Disk stats (read/write):
  sda: ios=16740/65374, merge=700/1231435, ticks=263266/104506312, in_queue=104769473, util=92.23%
98.25user 57.17system 12:07.24elapsed 21%CPU (0avgtext+0avgdata 16861296maxresident)k
8390640inputs+18764280outputs (8major+3220644minor)pagefaults 0swaps